Answer:

Step-by-step explanation:
PEMDAS is a acronym which helps you to remember the order of operations.
PEMDAS stands for :
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
<u>Let's </u><u>solve</u>

Multiply the numbers : 15 × 18 = 270
⇒
Add the numbers : 270 + 12 + 3 + 9
⇒
Hope I helped!
Best regards!!
Answer:
I don't know where those choices are from but the answer is -21.....
Step-by-step explanation:
24 − (23 + 22)
24-23-22
-21
X/X+5=-2
please mark brainiest if this helped you out<span />
The equation of a circle:

(h,k) - the coordinates of the center
r - the radius
The center is (4,0), the length of the radius is 2√3.
It should be 9cm. subtract 3